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STV5730A Datasheet

MULTISTANDARD ON-SCREEN DISPLAY FOR VCR

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STV5730A
MULTISTANDARD ON-SCREEN DISPLAY
FOR VCR, PAY-TV, SATELLITE RECEIVER
. A CHARACTER GENERATOR WITH ASCII
RAM AND CHARACTER ROM :
- 128 characters
- 12 dots x 18 lines character composition
- 11 rows x 28 characters page composition
. ACCURATE INTERNAL BANDGAP VOLTAGE
REFERENCE
. LINE LOCKED PLL
. VIDEO TIMING GENERATOR
. INPUT CVBS CLAMP AND SYNC EXTRAC-
TOR
. VERTICAL SYNC SEPARATOR
. INPUT CVBS SYNC RE-INSERTION
. INPUT CVBS PRESENCE DETECTOR
. PAL/NTSC CHROMA ENCODER
. DEDICATED PINS FOR LUMA AND CHROMA
EXTERNAL FILTERING
. GAIN ON CVBS OUTPUT FOR EITHER 0dB
OR 6dB CAPABILITY
. MULTISTANDARD TRANSLUCENT MIXED
MODE
. OPAQUE MIXED MODE
. NORMAL FULL PAGE MODE
. VIDEO FULL PAGE MODE
. SUITABLE FOR S-VHS
. THREE DIFFERENT MARKERS CAN BE
GENERATED SIMULTANEOUSLY
. THREE WIRE SERIAL INTERFACE FOR MI-
CROPROCESSOR CONTROL
SO28
(Plastic Micropackage)
ORDER CODE : STV5730A
PIN CONNECTIONS
YOUT
VIDEO IN
RES
FTR
1
2
3
4
28 YIN
27 VIDEO OUT1
26 VIDEO OUT2
25 CIN
AVDD
DV DD
CSYNC
5
6
7
24 COUT
23 LESCREEN
22 LECHAR
XTAL IN
8
21 AGND
XTAL OUT
9
20 DGND
MUTE
10
19 BAR
DATA
11
18 CO
DESCRIPTION
The STV5730A IC is intended to be used in VCR,
Satellite receiver and PAY-TV systems for CVBS or
R/G/B text/graphics insertion.
CLK
CSN
R
12
13
14
17 FB
16 B
15 G
February 1996
1/20


STMicroelectronics Electronic Components Datasheet

STV5730A Datasheet

MULTISTANDARD ON-SCREEN DISPLAY FOR VCR

No Preview Available !

STV5730A
PIN DESCRIPTION
No Name
Type
Description
1
YOUT
Analog Output This pin outputs the luma to allow the user to notch filter it. This pin may be
connected to the YIN input for minimum cost applications.
2 VIDEO IN Analog Input This is the CVBS input. An external capacitor is needed for clamp operation.
The STV5730A extracts the sync from this signal when the C7 control bit is
set.
3 RES Analog Pin it must be tied to an external resistor to control the PLL f0 frequency.
4 FTR Analog Pin it must be tied to the line PLL loop filter.
5 AVDD Supply Pin 5V analog supply pin.
6 DVDD Supply Pin 5V digital supply pin.
7
CSYNC
Bidirectional This pin inputs the mixed mode composite sync when the C7 control bit is
Pin cleared. It outputs the video in extracted sync when the C7 control bit is set.
8
XTAL IN
Digital Input This is the 4*fsc quartz input. The quartz may be started or stopped under
control of dedicated serial interface messages. Alternatively, a 4fsc clock can
be input directly. The stop message must not be used in this case.
9 XTAL OUT Digital Output This is the 4*fsc quartz output. The quartz may be started or stopped under
control of dedicated serial interface messages.
10
MUTE
Digital Output This pin indicates if the CVBS input signal is present on VIDEO IN input pin.
It is forced low if the M2 mode bit is cleared.
11 DATA Digital Input This is the serial interface data input.
12 CLK Digital Input This is the serial interface clock input.
13 CSN Digital Input This is the serial interface chip select input.
14 R Digital Output This is the Red signal output. It is forced low during the horizontal and vertical
blanking intervals.
15 G Digital Output This is the Green signal output. It is forced low during the horizontal and
vertical blanking intervals.
16 B Digital Output This is the Blue signal output. It is forced low during the horizontal and vertical
blanking intervals.
17 FB Digital Output This is the fast blanking output. It is delivered to control an external R/G/B
switch for R/G/B or TV applications.
18 CO Digital Output This is the character activity output. It indicates if a character foreground is
being displayed, and can be used to control its intensity.
19 BAR Digital Input This input forces the PLL in free run mode when active. It is enabled if the M0
mode bit is set.
20 DGND
Supply Pin 0V digital ground.
21 AGND Supply Pin 0V analog ground.
22 LECHAR Analog Input This pin determines the character intensity level in external bias mode (ie
when the C10 control bit is set). This level must be defined relative to the
internal black reference. A variable luminance signal may be entered. To be
grounded if not used.
23 LESCREEN Analog Input This pin determines the screen intensity level in external bias mode (ie when
the C10 control bit is set). This level must be defined relative to the internal
black reference. A variable luminance signal may be entered. To be grounded
if not used.
24
COUT
Analog Output This pin outputs the full page mode chroma for external filtering (and
attenuation if necessary). This pin may be connected to CIN for minimum cost
applications.
25 CIN Analog Input This pin inputs the filtered chroma.
26 VIDEO OUT2 Analog Output If the M7 mode bit is cleared : this pin is a CVBS output that delivers the
VIDEO IN signal. The sync is re-inserted if the M4 mode bit is set. The output
amplitude may be either 0dB or +6dB according to the M5 mode bit.
If the M7 mode bit is set : It outputs the currently active synchronism. The
signal amplitude is controlled by the M5 mode bit.
If the M8 mode bit is cleared : VIDEO OUT2 is in high impedance state.
27 VIDEO OUT1 Analog Output This is a CVBS output. It delivers the VIDEO IN + text in mixed mode and the
CVBS text in full page mode. The output signal amplitude may be either 0dB
or 6dB according to the M5 mode bit. The sync is re inserted if the M4 mode
bit is set.
28 YIN Analog Input This pin inputs the notch filtered luma.
2/20


Part Number STV5730A
Description MULTISTANDARD ON-SCREEN DISPLAY FOR VCR
Maker ST Microelectronics
Total Page 20 Pages
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